Question 199574
Let's use variables to form equations: 

Man's age: x , Son's age: y.

x =5y ,  x-y = 32

Since we have 2 unknowns and 2 equations, we can solve this using a variety of methods for systems of equations. Since x=5y, we can plug this into the 2nd equation to get 4y = 32, therefore:

y = 8 , x = 40.

Since the man's age is 40, his age in 12 years' time is 52.